Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
  • B60R21/13—Roll-over protection
  • B60R21/131—Protective devices for drivers in case of overturning of tractors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
  • B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
  • B62D21/18—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17
  • B62D21/186—Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups B62D21/02 - B62D21/17 for building site vehicles or multi-purpose tractors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
  • B60R21/13—Roll-over protection
  • B60R2021/132—Roll bars for convertible vehicles
  • B60R2021/134—Roll bars for convertible vehicles movable from a retracted to a protection position

Definitions

• the present invention relates to a small passenger work vehicle that can ensure the safety of an operator.
• a pair of left and right front wheels are mounted on a pair of left and right main frames extending in the front-rear direction via a front wheel transmission case, and a pair of left and right rear wheels are rear wheel transmission cases.
• the main frame supports the driving section, engine, and transmission case.
• various operation levers are arranged on the left and right sides of the seat.
• a tillage machine is connected to the back of a small passenger work vehicle, and there is a force that can perform medium-tillage weeding while moving between trees. ⁇ The outer peripheral edge of the machine is planted. May contact and damage existing fruit trees.
• An object of the present invention is to provide a small passenger work vehicle that can solve the above problems. Disclosure of the invention
• a pair of left and right front wheels and a rear wheel are attached to a pair of left and right main frames extending in the front-rear direction, and a sub-frame is attached to the main frame, and the sub-frame is extended in the left-right width direction.
• Left and right frame forming bodies extending rearward from the left and right ends of the front frame forming body, and the left and right frame forming bodies are inclined rearward and downward from the front end.
• the present invention relates to a small-sized passenger work vehicle having a rearward extension portion that extends.
• the present invention is also characterized by the following configurations.
• the left and right frame formations shall be located directly above the front and rear wheels, respectively.
• Each of the bent portions connecting the side inclined portion and the rearward extension portion of the left and right frame forming body is formed as a grip portion, and the grip portion is arranged on the side of the seat of the driving unit.
• a side cover body is erected between the side inclined part and the rear extension part of the subframe, and the middle part of the side cover is formed by bending downward to form a convex part.
• a grip space was formed between the grip and the handle.
• the portal ⁇ 1 formed in the form of a frontal gate is straddled between the left and right frame forming bodies.
• the engine was mounted on the rear of the main frame, the engine was covered with a bonnet, the upper surface of the bonnet was formed flat, and locking pieces were provided on the left and right sides of the bonnet. thing.
• a floor forming body that forms the floor of the driving section is stretched, and the front wall forming section is substantially perpendicular from the floor forming body toward the front end position of the seat of the driving section.
• a part of the wheel steering mechanism is arranged in the lower space directly below the inclined surface formed by the front frame forming body and the left and right stepping surface forming portions, and the front frame is formed and the left and right side stepping is performed.
• a front weight that also serves as a bumper is provided along the surface forming part, and a part of the wheel steering mechanism is covered by the front face.
• a front weight that can also serve as a bumper must be provided along the front frame forming body and the left and right tread surface forming parts.
• the transmission case and the rear wheel center transmission case are spaced apart in the front-rear direction, and the left and right front wheels are linked to the left and right sides of the transmission case via the left and right front wheel transmission cases.
• the left and right rear wheels are connected to the left and right sides of the rear wheel center transmission case via the left and right rear wheel transmission cases.
• the left and right frame forming bodies arranged in the same direction are formed in a rectangular frame shape in plan view, and the rear wheel center transmission case is interlocked to the transmission case via a second transmission mechanism.
• the driver's seat was arranged above the gearshift case, and the engine was arranged just behind the seat.
• the speed change case and the rear wheel center transmission case are connected via a connecting support, and are 7 strainers.
• the connecting support extends horizontally in the width direction and is connected to the rear end of the transmission case.
• the left and right rear wheels extend rearward from the left and right sides of the horizontal frame. It is provided with a left and right front-rear extension frame connected to the transmission case.
• connection support body has left and right connection support frames connected to the left and right side walls of the transmission case, respectively, and the left and right connection support frames have front ends connected to the left and right side walls of the transmission case, respectively, and Left and right side rearward extension frame formations extending toward the right and left and right side rearward extension frame formations. Left and right rear frame formations extending rearward from the rear ends of the inclined frame formations and connected to the left and right rear wheel transmission cases.
• a connecting frame has been installed between the left and right connecting supporting frames.
• FIG. 1 is a side view of a small passenger work vehicle as a first embodiment according to the present invention.
• FIG. 3 is a partially cutaway side view of the body frame.
• FIG. 2 is a cross-sectional side view of the reflector.
• FIG. 5 is a left side view showing a small-sized passenger work vehicle as a second embodiment.
• the perspective view which shows the frame structure of the small passenger work vehicle.
• FIG. 9 is a perspective view showing a frame structure of a small passenger work vehicle as a third embodiment.
• FIG. 13 is a perspective view showing a frame structure of a small passenger work vehicle as a fourth embodiment.
• FIG. 15 is a perspective view showing a frame structure of a small passenger work vehicle as a fifth embodiment.
• FIGS. 1 to 3 A shown in FIGS. 1 to 3 is a small passenger work vehicle as a first embodiment according to the present invention, and the small passenger work vehicle A is provided with a transmission case 2 at a substantially central portion on a body frame 1, Front wheel transmission cases 3 and 3 are linked to each other on the left and right sides of the transmission case 2, and each front wheel transmission case The front wheels 4 and 4 are mounted on the chassis 3 and 3 via the front axles 4a and 4a, and a rear wheel transmission case 5 is provided at the rear on the body frame 1, and the rear wheel transmission case 5 is installed.
• Rear wheel transmission cases 6 and 6 are interlocked and connected to the left and right sides of the vehicle, respectively, and rear wheels 7 and 7 are attached to the rear wheel transmission cases 6 and 6 via rear axles 7a and 7a, respectively. Is composed.
• the vehicle body support structure 8 is provided with a driving section 9 at the front and an engine between the transmission case 2 and the rear wheel center transmission case 5.
• the transmission case 2 is interlocked to the engine 10 via the first transmission mechanism 12, and the rear transmission wheel transmission case 5 is connected to the transmission case 2 by the second transmission mechanism.
• Linked via 13 to t. 18 is a notch.
• a pair of left and right working machine coupling bodies 14, 14 is protruded rearward, and a transmission pong 15 is suspended between the two working machine coupling bodies 14, 14.
• the transmission transmission ltU5 is linked to the engine 10 via a third transmission mechanism 16, and an elevating mechanism 17 is provided at the rear end of the body frame 1 '.
• the body frame 1 is installed between a pair of left and right main frames 20, 20 extending in the front-rear direction and the front end and the rear end of the main frames 20, 20.
• a guard frame 23 having a rectangular frame shape in a plan view interposed therebetween is provided.
• the pair of left and right main frames 20, 20 maintain a slightly wider width than the left and right widths of the transmission case 2, and protrude in the front-rear direction to form a main body frame body 20 a. .20a, the inner front extension frame formations 20b, 20b which mediate inward from the front ends of the main frame formations 20a, 20a, and the rear upper part of the main frame formations 20a, 20a
• the rear inclined frames 20c and 20c which are inclined toward each other,
• the frame forming members 20c, 20c are formed from rear rising frame members 20d, 20d extending upward from the rear ends of the frame forming members 20c.
• the pair of left and right inner front distraction frame forming bodies 20b, 20b are arranged in front of the front axles 4a, 4a, inside the forces, the left and right front wheels 4, 4, and both frame forming rests 20a
• the left and right front wheels 4 and 4 have a large left and right front wheel 4 and 4 with a gradually increasing width in plan view.
• a sub-frame connector 30 extending in the left-right width direction is horizontally mounted via a mounting bracket 31 between the front ends of the pair of left and right inner front extension frame members 20b, 20b. 32 is the mounting port.
• a front connection body 33 is laid horizontally, and on the upper surface portions of the body frame formation bodies 20a, 20a located immediately behind the front connection body 33,
• the front wheel transmission case stays 34, 34 respectively protrude, and the left and right front wheel transmission cases 3 extending in the left-right width direction are respectively fitted into fitting recesses 34a, 34a formed in the center of the upper end of both stays 34.34.
• 3 and the stays 34, 34 and the connection bracket 3a attached to each transmission case 3, 3 are connected by connection bolts 3b, 3b, and the transmission case 2 is supported from below.
• a rear connecting body 35 is suspended between the rear portions of the pair of left and right main body frame forming bodies 20a, 20a, and a pair of left and right engine columns 36, 36 are erected from the left and right sides of the rear connecting body 35. ing. In the middle of the pair of left and right rear inclined frame formation rests 20c, 20c, rear wheel transmission casings 37, 37 are respectively protruded, and a fitting recess formed in the center of the upper end of both stays 37, 37.
• a link connecting bracket 37b is provided downward at the lower end of each rear wheel transmission case stay 37, and the lower link constituting a part of the lifting mechanism 17 is mounted on the link connecting bracket 37b.
• the base end of the link 38 is connected by a connecting pin 39.
• the inclination angle of the rear-side inclined frame forming body 20c is formed to be substantially the same as the maximum inclination angle of the lower link 38 so that the lower link 38 does not interfere with the rear-side inclined frame forming body 20c. .
• the pair of left and right rear rising frame forming bodies 20d, 20d are formed in a rising shape at a position rearward of the rear axles 7a, 7a, and lift-arm stays 40, 40 are provided above the two frame forming bodies 20d, 20d.
• the arm support 41 is laid across the lift arm stays 40, 40, and the base ends of the pair of left and right lift arms 42, 42 and the base end of the operating arm 43 are mounted on the arm support ltl41.
• a lifting cylinder 44 is interposed between the tip of the arm 43 for attachment and operation and the work machine connector 14, and the tip of each of the lift arms 42, 42 and the tip of each of the lower links 38, 38 are connected to each other.
• Lift links 45, 45 are interposed therebetween, and a top link 17 a connected to the work implement coupling body U constitutes a lifting mechanism 17.
• Fixing brackets 46, 46 for fixing the rear frame forming body 26, which will be described later, are attached to the upper ends of the rear rising frame forming bodies 20d, 20d, respectively.
• the sub-frame 21 includes a front frame forming body 24 extending in the left-right width direction, and a left frame extending rearward from the left and right ends of the front frame forming body 24. It is formed from right frame forming bodies 25, 25 and a rear frame forming body 26 laid horizontally between the rear ends of the left and right frame forming bodies 25, 25, and laid horizontally between the front ends of the main frames 20.20.
• the front parts of the left and right frame forming bodies 25, 25 are fixed to the left and right ends of the connected subframe linked body 30, and the rear frame is formed on the upper ends of the rear rising frame forming bodies 20d, 20d of the main frames 20, 20. Fix the one-piece forming body 26 and fix it.
• the left and right frame forming bodies 25, 25 are arranged at positions directly above the front and rear wheels 4, 4, 7, 7, respectively, and a stepping metal forming part 25a.25a inclined from the front end toward the rear downward.
• Side inclined portions 25b, 25b which are inclined rearward and upward from the rear ends of the treading surface forming portions 25a, 25a to the side position of the seat 74 of the driving unit 9 described later, and each side inclined portion 25b , 25b from the rear end of the main frames 20 and 2 (1) to the position above the rear riser frame 20d and 20d.
• Rear extension portions 25c, 25c Rear extension portions 25c, 25c.
• each of the bent portions connected to the side inclined portions 25b, 25b and the rear extension portions 25c, 25c is formed with a grip portion 27.27, and both grip portions 27, 27 are seats 74 of the driving unit 9. It is located on the left and right sides of.
• the rear extension portions 25c, 25c have a connecting horizontal frame 49 suspended between the front portions, and reflectors 50, 50 are attached to the rear ends of the mounting members 51, 51, respectively.
• the attachment body 51 has a cylindrical fitting part 51a that fits into the rear end opening of the rear extension part 25c, and a disk-shaped part integrally formed on the head of the cylindrical fitting part 51a.
• the reflector 50 is formed on the rear surface of the support 51b.
• the rear frame forming body 26 extends between the rear ends of a pair of left and right rear extending portions 25c, 25c extending in the width direction.
• the intermediate portion 26a located immediately above the rear rising frame forming body 20d is located forward of the left and right ends 26b, 26b.
• the left and right side inclined portions 2 (5c and 26c) are formed between the left and right end portions of the portion 2Ba.
• fixing brackets 47, 47 are attached to the lower surface of the left inclined portion 26c and the lower surface of the right end of the intermediate portion 26a, respectively, and the fixing brackets 47, 47 are attached to the upper ends of the rear-side rising frame forming bodies 20d, 20d. It is superimposed on the fixing bracket 46.46 attached to and fixed by fixing bolts 48,48.
• the rear frame forming body 26 forms a rearwardly convex rear space S1 behind the midway portion 26a, and secures a rising rotation angle of the lift arms 42, 42 by the rear space S1.
• the rotation fulcrum of the lift arms 42, 42 can be arranged as close to the center of the vehicle body as possible.
• the lifting mechanism 17 can be arranged closer to the center of the vehicle body, and various working machines connected to the lifting mechanism 17 can be brought closer to the vehicle body, thereby improving the front-rear weight balance of the vehicle body. Can be.
• the roll bar 22 is located at the position immediately behind the seat 74 of the driving section 9 described later, and
• the arm 21 is straddled between the rear extension portions 25c, 25c of the arm 21 and is formed by a pair of right and left support portions 22a, 22a and a horizontal frame portion 22b extending between upper ends of both support portions 22a, 22a. ing.
• the pair of left and right support portions 22a and 22a are attached to the rear intermediate portions 25c and 25c, respectively, so that the lower ends thereof can be freely turned upside down by lateral pivots 29 and 29 via support brackets 28 and 28, respectively.
• Pin insertion holes 22c, 22c are formed in the lower portions of the pillar portions 22a, 22a located above 29, 29, while the support brackets 28, 28 are fixed in the upright position just above the pivots 29, 29. ;]! Pin holes 28a, 28a are formed, and pin holes 28b, 28b for fixing the rearwardly inclined position are formed at positions rearward of the pivots 29, so that one of the pin holes 22c.22c is formed.
• the upper end of the mouth lever 22 whose posture has been changed to the backward tilt position has the same height as the handle 68 of the operation unit 9 described later, and the space required for storage in a hangar or the like is set. We are trying to make it smaller.
• winkers 61.61 are mounted on the support brackets 28.28 via mounting brackets 62,62.
• the guard frame 23 extends in the left-right width direction, and has a front lower frame forming body 23 a formed to be slightly shorter than the front frame forming body 24.
• Left and right standing frame forming rests 23b, 23b formed by being raised upward from the left and right ends of the frame forming body 23a to substantially the same height as the horizontal frame portion 22b of the roll bar 22, and both rising frame forming bodies 23b.
• 23c .23c formed by extending from the upper end of .23b to the position near the roll bar 22 behind, and the front and rear intermediate frame forming bodies 23c .23c It is formed from left and right rear upper frame forming bodies 23d, 23d formed to extend inward in opposition to each other, and a fitting connection body 23e laid horizontally between the two rear upper frame forming bodies 23d, 23d. Then, on the left and right sides of the front lower frame forming body 23a, inverted L-shaped connecting brackets 55, 55 are attached, respectively, and both connecting brackets 55, 55 are located below the left and right sides of the front frame forming body 24. It is connected to connecting pieces 56, 56, which are vertically suspended, by connecting bolts 57, 57.
• the connecting bracket 55 is connected to the connecting piece 56 by the connecting bolt 57 at a position below the stepping surface portion 80a described later, and the front and left and right sides are covered with the front weight 96 described later.
• the fitting connecting body 23e extends in the left-right width direction, and is formed in a semicircular cross section to be fitted to the horizontal frame portion 22b of the force bar, and a connecting bolt hole 58 is formed in the center.
• a connecting bolt through hole 59 is formed in the center of the horizontal frame part 22b so as to penetrate vertically, and a connecting bolt 60 is passed through the corresponding connecting bolt hole 58 and the connecting bolt through hole 59.
• the fitting connector 23e is connected to the horizontal frame portion 22b.
• the guard frame 23 is detachably attached between the front frame forming body 24 and the horizontal frame portion 22b so as to protect the operator sitting on the operating portion 9.
• the guard frame 23 hinders storage in the storage box or the like, it can be removed, and at this time, the roll bar 22 changes its posture to the backward tilt position as necessary as described above. be able to.
• the main frames 20, 20, the sub-frame 21, the roll bar 22, and the guard frame 23, which are the respective components of the body frame 1, are formed using round pipes.
• the driving unit 9 includes a handle boss support 65 between the center of the front frame forming body 24 of the subframe 21 and the center of the subframe connector 30. Horizontally leans forward at approximately the same angle as the tread surface forming parts 25a, 25a, and tilts the handle post 66 on the handle post support 65 in a rearwardly tilted direction that is substantially perpendicular to the handle bost support 65 that is tilted forward.
• the handle post 66 is passed through the handle post 66 to While attaching the handle 68 to the upper end of the shaft 67, the wheel steering mechanism 69 is interposed between the lower end of the handle support shaft 67 extended to below the handle support support rest 65 and the lower part of the transmission case 2.
• the boss 66 is covered with a handle column 70, a forward / reverse switching lever 71 is mounted on the left side wall of the handle column 70, and an accelerator lever 72 is mounted on the right side wall of the handle column 70.
• a seat 74 is mounted on the transmission case 2 via a seat support frame 73, and a main transmission operation lever 75 and a sub transmission operation lever 76 are disposed on the left side of the seat 74.
• a main transmission operation lever 75 and a sub transmission operation lever 76 are disposed on the left side of the seat 74.
• an elevating operation lever 77, a work implement transmission clutch on / off operation lever 78, and a working depth adjustment operation lever 79 are provided.
• the operating levers 75, 76, 77, 78, 79 are arranged inside and near the grips 27, 27 of the sub-frame 21 described above.
• the operator can easily get on and off by gripping the grip portion 27 when getting on and off the driving unit 9, and also feels danger while operating various operation levers when working on a slope.
• the body can be reliably supported by quickly grasping the grip portion 27, and safety can be ensured.
• a floor section forming body 80 is stretched on the front portion of the body frame 1 in the driving section 9 and is connected to a rear end edge of the floor section forming body 80.
• a seat support frame cover 81 is provided.
• the floor forming body 80 includes a tread surface portion 80a that is stretched at an inclined surface position formed by the front frame forming body 24 and the left and right tread surface forming portions 25a and 25a, and a shift rearward from the tread surface portion 80a.
• a horizontal surface portion 80b formed by extending substantially horizontally to a position near the case 2 is formed.
• 88 is a brake pedal and 99 is a back mirror.
• the operator can operate the steering wheel in a comfortable position with his feet on the tread surface portion 80a and the water surface portion 80b, and when traveling on a downhill slope, the operator must use the tread surface portion 80a. So that you can step on it.
• the cover body 81 for the seat supporting machine is provided with a seat for the driving section 9 from the rear edge of the center of the horizontal surface section 80b.
• a front wall forming portion 8ia formed substantially vertically to the front end position of 74, left and right side wall forming portions 81b and 81b formed to rise above the left and right side edges of the horizontal surface portion 80b, and these walls.
• a ceiling wall forming portion 81c extending rearward from the upper edge of the forming portion 81a.81b.8ib and surrounding the upper peripheral portion of the seat support frame 73.
• the front wall forming portion 81a and the left and right side wall forming portions 81b and 8ib are arranged so as to form a substantially U-shape in plan view, and have a front opening shape for accommodating the operator's heel portion.
• a heel receiving recess 82 is formed.
• the operator seated on the seat 74 can secure a large degree of freedom of the foot placed on the floor forming body 80 up to a position directly below the front end of the vehicle, and can drive in a comfortable posture. Can reduce fatigue during driving.
• lever guide grooves 83, 84, 85, 86.87 for guiding various operation levers are formed.
• a side cover body 90 is provided between the side inclined portion 25b and the rear extension portion 25c of the subframe 21.
• the side cover body 90 is provided on the side of the vehicle body, above the front wheels 4, and on the rear wheels. 7 covers the upper front side.
• the middle part 90a of the side cover 90 is formed by bending downward to form a grip part space 91 between the middle part 90a and the grip part 27.
• the grip 27 can be easily gripped via the space 91.
• the upper side of the engine 10 is covered with a bonnet 92 which can be freely opened and closed.
• the upper surface of the bonnet 92 is formed as a flat surface to form a luggage table 93.
• the luggage mounting table 93 is formed with protruding ridges 93a and recessed ridges 93b extending in the front-rear direction alternately in the left-right width direction to form a concave-convex section.
• the rigidity of the mounting table 93 is ensured.
• 98 is;! Closed bracket.
• locking hooks 94, 94 as locking pieces are respectively protruded downward, and between the locking hooks 94, 94 facing left and right.
• the baggage N placed on the baggage mounting table 93 can be fixed by hanging the baggage fixing belt 95. I'm trying.
• a front weight 96 is attached to the front lower frame forming body 23 a by attaching bolts 97 via connecting pieces 56, 56.
• the front weight 96 includes a front forming portion 96a formed by extending in the left and right width direction along the front lower frame forming rest 23a, and a left and right stepping surface forming portion 25a from the left and right ends of the front forming portion 96a.
• the left and right side surface forming portions 96b and 96b formed by extending rearward along the lines 25a and 25a are formed in a substantially U-shape in plan view to function as a bumper.
• the front weight 96 covers the lower space S2, which is formed right below the stepped surface portion 80a and has a right-angled triangular shape in a side view, from the front and left and right sides.
• a part of the wheel steering mechanism 69 that is, a pinion gear 69a attached to the lower end of the handle support shaft 67, and a sector gear 69b mating with the pinion gear 69a are provided in the lower space S2 immediately below the tread surface portion 80a.
• the steering arm 69c is connected to the sector gear 69b and accommodates a steering arm 69c pivotally supported by the handle post support B5.
• 69d is a drag rod.
• a part of the wheel steering mechanism 69 can be reliably protected because the front weight 96 covers the front and the left and right sides.
• the front weight 96 can ensure a good balance between the front and rear of the vehicle body, thereby ensuring stable running performance and agricultural work performance.
• FIGS. 8 and 9 show a small passenger work vehicle A as a second embodiment.
• the transmission case 2 and the rear wheel center transmission case 5 are spaced apart in the front-rear direction. And the two cases 2 and 5 are interlocked and connected via the second transmission mechanism 13 to form the transmission case.
• the left and right front wheels 4 and 4 are linked to the left and right sides via left and right front wheel transmission cases 3 and 3, respectively, while the left and right rear wheels 7 are And 7 are linked via rear right and left rear wheel transmission cases 6 and 6, respectively.
• the vehicle body support structure 8 is formed between the transmission case 5 and the connecting support 110.
• the left front wheel transmission case 3 has a cylindrical front wheel transmission case base 3c extending leftward from the front of the left side wall 2a of the ⁇ box-shaped transmission case 2.
• a cylindrical front wheel transmission case main body 3d extending vertically is connected to the end of the front wheel transmission case base end 3c.
• the left front wheel 4 is linked to the lower end of the case main rest part 3d.
• the right front wheel transmission case 3 is also connected to the right side wall 2b of the transmission case 2 in the same configuration as described above.
• the second transmission mechanism 13 is provided with a front connection shaft 101 projecting rearward from a rear end of a front gear case 100 extending rearward from a middle portion of the left side wall 2a of the transmission case 2, while having a rectangular box shape.
• a rear connection ⁇ 103 projects forward from the front end of a rear gear case 102 that extends forward from the front of the left side wall 5a of the rear wheel center transmission case 5, and both connection shafts 101, 103 are connected. They are linked by a transmission shaft 104.
• 105 and 106 are joints.
• the left rear wheel transmission case 6 has a cylindrical rear wheel transmission case base end 6c extending leftward from a middle portion of the left side wall 5a of the rear wheel center one transmission case 5, and the rear wheel transmission case.
• a rear wheel transmission case main body 6d is connected to the end of the base end 6c so as to face rearward and downward. .
• the right rear wheel transmission case 6 has the same configuration as the above and is linked to the right wall 5b of the rear wheel transmission case
• the left and right rear wheels 7, 7 have a larger diameter than the left and right front wheels 4, 4, so that they can run at high speed.
• connection support body 110 is provided with brackets U2.113, each having a substantially U-shape in plan view, connected to the center of the front and rear ends of a flat connection support plate 111, and the transmission case 2 is connected to both brackets 112, 113.
• the rear end and the front end of the rear wheel center transmission case 5 are connected to each other.
• connecting support 110 is formed by bending both left and right ends of the connecting support plate 111 upward to form bent portions 114 and 114, thereby increasing the strength.
• the fuel tank 115 is mounted.
• the connecting support 110 is formed in a flat plate shape, the housing space 116 is formed behind the transmission case 2, and a fuel tank 15, a muffler, a battery, and the like are disposed in the housing space 116.
• the height of the small passenger work vehicle A can be reduced, the power, body, and body can be made compact, and the degree of freedom in the arrangement of the muffler, fuel tank 115, battery, etc. increases.
• the small-sized passenger work vehicle A can have various forms.
• connection support 110 is located substantially at the center of the vehicle body in plan view, and a power transmission system is formed around the connection support 110.
• Transmission case 2 left and right front wheel transmission case 3.3, transmission shaft 104, rear wheel center-transmission case 5, left and right rear wheel transmission cases 6, 6 Maintenance of these power transmission systems can be easily performed from the outside.
• the vehicle body support structure 8 is mainly formed of members constituting a power transmission system such as the transmission case 2 and the rear wheel center-transmission case 5, the weight of the vehicle body support structure rest 8 is greatly reduced. Therefore, the weight of the small passenger work vehicle A can be reduced.
• the vehicle body support structure 8 has an operation unit 9 at the upper front side and an engine 10 immediately behind the operation unit 9.
• the driving section 9 has a seat 74 disposed above the transmission case 2 and a handle column 70 disposed in front of the seat 74.
• the engine 10 is disposed immediately behind the seat 74.
• the engine 10 is linked to the transmission case 2 via the first transmission mechanism 12, and is connected to the rear of the vehicle body. It is linked to various working machines via a third transmission mechanism 121.
• the seat 74 of the driving unit 9 is disposed above the transmission case 2 and the engine 10 is disposed immediately behind the seat 74, so that the weight of the operator is reduced.
• the weight is shifted toward the center of the body support structure 8, the center of gravity of the body is shifted toward the center of the body, and the front-rear balance of the body can be improved, improving the operability and traveling safety of the body Can be done.
• a muffler (not shown) extending in the left-right width direction may be provided at a position directly below the piston head 10a which is provided to be inclined rearward and upward toward the rear of the engine 10.
• a hollow cylindrical sub-frame 21 is installed between the left and right front wheel transmission cases 3, 3 of the body support structure 8 and the left and right rear wheel transmission cases 6, 6. ing.
• the subframe 21 which forms the exoskeleton of the vehicle body and functions as a force frame, a guard frame or a weeding frame is provided.
• the sub-frame 21 is provided with a pair of left and right front support frames 25d, 25d extending downward from the middle of the side inclined portions 25b, 25b, respectively, to the front wheel transmission case main body. 3d, 3d, and 3d, while extending rearward and downward from the left and right sides of the rear frame forming body 26, and bending the lower ends of the rear support frames 26d, 26d.
• the lower end is attached to the rear side of the rear wheel transmission case base ends 6c, 6c.
• reference numeral 122 denotes a bracket.
• a hollow cylindrical intake pipe 123 extending rearward is connected and connected, and at the upper right end of the rear frame forming body 26, a force is applied.
• An air cleaner 124 is communicatively connected to a position ffllj inside the intake pipe 123, and the air cleaner 124 is communicatively connected to the engine 10.
• the intake pipe 123 is connected to the rear frame forming body 26 in communication with the air, the air sucked from the intake pipe 123 expands in the rear frame forming body 26 and is muffled.
• the intake pipe 123 is extended rearward to take in air from the rear of the vehicle body, wind noise generated in the intake pipe 123 can be reduced.
• the intake pipe 123 Since the intake pipe 123 is located as far away from the seat 74 as possible, The intake pipe 123 is located at a position away from the ears of the operator who sits on the vehicle, so that unpleasant wind noise at the time of the operation can be prevented from being heard at all times.
• An elevating mechanism 17 is provided below the rear frame forming body 26.
• the elevating mechanism 17 allows various working machines such as a cultivator 120 connected to the rear of the vehicle body to be moved up and down. I have.
• FIG. 11 shows a small-sized passenger work vehicle A as a third embodiment.
• a connecting support 110 is extended in the left-right width direction and connected to the rear end of the transmission case 2.
• the left and right front and rear extension frames 131, 131 extending rearward from the left and right sides of the horizontal frame 130 and connected to the left and right rear wheel transmission case 6.6.
• the horizontal frame 130 uses a square pipe having a rectangular hollow cross section, and a bracket 132 having a substantially U-shape in a plan view is continuously provided at the center of the horizontal frame 130, and the bracket 132 is connected to the horizontal frame 130. And attach it to the rear end of the transmission case 2 via
• the left front-rearward extension frame 131 is formed by bending a hollow cylindrical pipe halfway, and is provided with a rear intermediate frame forming body 133 that extends rearward from the left side of the horizontal frame 130. It is formed from a rising frame forming body 134 which rises upward from the rear end of the rearward extending frame forming body 133.
• the rear upper portion of the rear extension frame forming member 133 is continuously connected to the lower portion of the rear wheel transmission case base end portion 6c via a bracket 135, and the upper end of the rising frame forming member 134 is connected to the subframe 21.
• the rear frame forming body 26 is provided continuously below the left side.
• the connecting support is formed by the horizontal frame 130 and the left and right frontward and rearward extending frames 131 and 131, the weight of the connecting support 110 can be reduced while maintaining the strength.
• the housing space 116 formed behind the transmission case 2 is directed downward to the vehicle body.
• the storage space 116 can be provided with a larger fuel tank 115, muffler, batcher, and the like.
• FIG. 12 shows a small passenger work vehicle A as a fourth embodiment.
• a connecting support 110 is provided on the left and right sides of the transmission case 2 at the rear of the left and right side walls 2a.2b. It is formed by the connecting support frames 140, 140.
• the left and right connecting support frames 140, 140 are formed by bending hollow cylindrical pipes, and extend rearward from the rear ends of the left and right side walls 2a, 2b of the transmission case 2 to the rear.
• the left and right inclined frame forming bodies 142, 142 which extend obliquely outward and downward from the rear ends of the left and right rear extension frames 141, 141, respectively.
• the left and right rear frame forming members 143, 143 which extend rearward from the rear ends of the inclined frame forming members 142, 142 and are connected to the left and right rear wheel transmission cases 6, 6, respectively, and the left and right rear frame forming members 143, 143. It is formed from left and right side frame forming bodies 144, 144, which are raised upward from the rear end, respectively.
• the front ends of the left and right rear extension frame forming bodies I and 141 are connected to the rear ends of the left and right side walls 2a and 2b of the transmission case 2 via brackets 145 and 145, respectively, and the left and right rear frame forming bodies 143 and 143, respectively.
• the rear upper part of 143 is connected to the lower part of the rear end parts 6c, 6c of the left and right rear wheel transmission cases via brackets 146, 146, respectively.
• Each of the sub-frames 21 is continuously provided on the lower left and right sides of the rear frame forming body 26.
• connection support 110 is formed by the left and right connection support frames 140, 140, the weight of the connection support 110 can be reduced while maintaining the strength, and the connection support 110 can be reduced. 110 can be simple in construction and easy to manufacture.
• the rear connection support frames 140, 140 are formed behind the transmission case 2 similarly to the third embodiment.
• the storage space 116 is expanded toward the lower part of the vehicle, and the fuel tank 115 Fuller, battery, etc. can be installed.
• FIG. 13 shows a small-sized passenger work vehicle A as a fifth embodiment.
• the left and right side connection in which the connection support 110 is connected to the rear left and right side walls 2a and 2b of the transmission case 2 is shown.
• the connecting frames 147 are formed between the supporting frames 140, 140 and between the front portions of the left and right connecting supporting frames 140, 140.
• the left and right connecting support frames 140 and 140 are formed in the same manner as in the fourth embodiment, and a hollow cylindrical connecting frame 147 is provided between the rear ends of the left and right rear extension frame forming members 141 and 141. It is erected.
• connection frame i47 is provided between the front portions of the left and right connection support frames 140, 140, the strength of the connection support 110 can be increased.
• the operator can step on the tread surface by stepping on the downhill surface when traveling on a downhill road, eliminating the fear of ⁇ peret overnight. be able to.
• each of the bent portions connecting the laterally inclined portion and the rearward extension portion of the left and right frame forming bodies is formed as a grip portion, and the grip portion is arranged on the side of the seat of the driving unit. Therefore, when getting on and off the operating unit, the operator can easily get on and off by grasping the grip.
• a side cover is provided between the side inclined portion and the rear extension portion of the sub-frame, and a middle portion of the side cover is formed by bending downward into a convex shape. Since the grip space is formed between the middle portion and the grip portion, the operator can easily grip the grip portion via the grip space.
• the subframe and the mouth are each formed by a round pipe, they can be formed by bending in a free direction in a three-dimensional space. The number of parts can be reduced, and the design can be improved. '
• the engine is mounted on the rear portion of the main frame, the engine is covered with a bonnet, the upper surface of the bonnet is formed as a flat surface, and locking pieces are provided on the left and right sides of the bonnet. Because of this, the luggage can be placed on the flat surface, and the luggage can be fixed with the luggage fixing belt that is stretched between the left and right locking pieces, making it easy to carry.
• a floor-forming body that forms the floor of the driving section is stretched at the front of the main frame, and the floor-forming body extends substantially vertically toward the front end position of the seat of the driving section from the floor-forming body. Since the front wall formation section is erected, the operator sitting on the seat can secure a large degree of freedom of the feet placed on the floor formation body up to a position directly below the front end of the seat. Lucky, easy going Can be turned around, and fatigue during driving can be reduced.
• the front weight which also serves as a bumper, is provided along the front frame forming body and the left and right treading surface forming portions. Good running performance and stable running performance and agricultural work performance can be ensured.
• the transmission case and the rear wheel center transmission case are arranged at an interval in the front-rear direction, and the left and right front wheels are respectively disposed on the left and right sides of the transmission case via the left and right front wheel transmission cases.
• the left and right rear wheels are connected to the left and right sides of the rear wheel center transmission case via the left and right rear wheel transmission cases, respectively.
• the left and right rear wheel transmission cases are attached to the respective subframes, and the subframes extend in the left-right width direction and are arranged in front of the transmission case, and the left and right ends of the front frame former.
• left and right frame forming bodies disposed above the left and right front and rear wheels so as to extend rearward, respectively, so as to be formed in a rectangular frame shape in plan view.
• the driver's seat is located above the transmission case, and the engine is located immediately behind the seat, so the vehicle body can be used without using special members. Since the support structure can be formed, the time required for the suspension of the vehicle body support structure can be greatly reduced.
• the driver's seat is located above the transmission case, and the engine is located immediately behind the driver's seat, so that the center of gravity of the vehicle is less than the center of the vehicle.
• the front-rear balance can be improved, and the operability during vehicle suspension can be improved. Even if various work machines such as a cultivator are connected to the rear part of the vehicle body,-the front of the vehicle suspension does not rise, and the workability of various work can be improved.
• a subframe is mounted between the left and right front wheel transmission case and the left and right rear wheel transmission case, and the subframe extends in the left and right width direction and is disposed in front of the transmission case,
• a left and right frame forming body extending rearward from the left and right ends of the front frame forming body and disposed above the left and right front and rear wheels, respectively;
• the sub-frame forms the exoskeleton of the vehicle body, functions as a guard frame or weeding frame, and protects the surrounding area of the operator who is sitting in the driving section and performing the steering operation. Can be given.
• the connecting support extends in the left-right width direction and is connected to the rear end of the transmission case, and extends rearward from the left and right sides of the horizontal frame. And the front and rear rear wheel transmission case and the front and rear extension frame are connected, so that the weight of the connection support can be reduced while maintaining the strength.
• the connecting support has left and right connecting support frames connected to the left and right side walls of the transmission case, respectively, and the left and right connecting supporting frames have front ends connected to the left and right side walls of the transmission case respectively.
• a left and right rear extension frame forming body extended rearward, and a left and right inclination frame forming body inclined and inclined outward and downward from a rear end of the left and right rear extension frame formation, respectively.
• the left and right rear frame members are extended rearward from the rear ends of the left and right side tilt frame members and connected to the left and right rear wheel transmission cases, respectively. And the weight of the connecting support can be reduced.
• connection frame is provided between the left and right connection support frames, the strength of the connection support can be increased.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Architecture (AREA)
• Structural Engineering (AREA)
• Body Structure For Vehicles (AREA)

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• 1998
  • 1998-01-22 KR KR1019997007148A patent/KR100323619B1/ko not_active IP Right Cessation
  • 1998-01-22 EP EP98900729A patent/EP0958993B9/en not_active Expired - Lifetime
  • 1998-01-22 CN CN98803443A patent/CN1097538C/zh not_active Expired - Fee Related
  • 1998-01-22 WO PCT/JP1998/000287 patent/WO1998034828A1/ja active IP Right Grant

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